Threshing-machine.



No. 636,754. Patented Nov. l4, I899. E. CAMPBELL. mmzsmma MACHINE.

(Application filed Mar. 2, 1898.)

2 Sheets-Sheet l.

No. 636,754. Patented Nov, I4, I899.

E. CAMPBELL. ITHRESHING MACHINE.

(Application filed Mar. 2, 1898.) .(No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT Price.

EZRA CAMPBELL, OF DAYTON, WASHINGTON.

THRESHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 636,754, dated November14;, 1899.

Application filed March 2, 1898.

To all whom it may concern:

Be it known that I, EZRA CAMPBELL, a citizen of the United States,residing at Dayton, in the county of Columbia and State of Washington,have invented a new and useful Improvement in the Wind-Power ofThreshing- Machines, of which the following is a specification.

This invention relates to improvements in attachments forthreshing-machines; and the object that I have in view is to providemeans by which the blast from the shoe-fan may be directed or deflectedto traverse the full lengths of the screens or riddles of thecleaning-shoe, thus thoroughly carrying off the chaff and refuse fromthe shoe and reducing to a minimum the loss of grain by the latterpassing over the tail ends of the riddles.

A further object is to provide an improved construction by which theblast may be defiected more or less upon the riddles of the shoe,according to the nature of the grain which it is desired to clean, topermit the passage of the air in two currents, one of which currents maypass above the cleaningshoe, and the other current'may pass below thebaffle, between the latter and the shoe.

A further object is to provide for the ready attachment of the device toa threshing-machine and its convenient adjustment therein.

With these ends in view my invention consists in the novel constructionand arrangement of parts, which will be hereinafter fully described andclaimed.

To enable others to understand the invention, I have illustrated thepreferred embodiment thereof in the accompanying drawings, forming apart of this specification, in which- Figure 1 is a verticallongitudinal sectional view through a part of an ordinarythreshingmachine, illustrating my blast-diverting attachment in positionabove the ordinary cleaning-shoe. Fig. 2 is a detail perspective view ofthe blast-diverting attachment removed from the shoe-chamber of thethreshing-machine. Fig. 3 is a longitudinal sectional view through theattachment represented by Fig. 2 on the plane indicated by the dottedline 3 3 of Fig. 4. Fig. 4' is aplan view of the device illustrated byFigs. 2 and 3.

Like numerals of reference denote like and Serial No. 672,299- (Nomodel.)

corresponding parts in each of the several figures of the drawings.

To enable others to understand my invention, I have illustrated itapplied to an ordinary threshing-machine in Fig. 1 of the accompanyingdrawings, in which 1 designates so much of a threshing-machine as isnecessary to an understanding of my inven* tion. The machine has theusual chamber 2, in which is hung or supported the cleaningshoe 3, thatlies in rear of the blast-fan 4 and in advance of an ordinary stackermechanism '5. No novelty for these devices is claimed in thisapplication,because theinvention resides in a peculiar form ofblast-diverting attachment which is arranged in the shoe-chamber 2,above and in operative relation to the cleaning-shoe 3 therein, for thepurpose of deflecting the blast upon the riddles or screens of the shoe,as graphically represented by the arrows in Fig. 1.

My attachment is designated in its entirety by the numeral 6, and it mayconveniently be termed a baffle plate or cap, which This baffle isarranged in 'the shoe-chamber in an inclined position above the shoe 3,and the upper forward end of said baffle 6 terminates on a line in rearof the front end of said shoe 3, while the lower rear end of the baffleoverhangs the shoe at or near its delivery end.

As shown by the arrows in Fig. 1, the blast from the fan passes throughthe riddles or screens of the shoe and strikes or impinges against theinclined baffle 6, which presents an imperforate barrier-surface to thepassage of the blast and serves to deflect the blast downwardly towardthe shoe before the blast passes through the throat or space between thelower rear end ofthe baffle and the delivery end of the shoe. Thisdeflection or diversion of the blast prevents it from passing freely andunobstructedly through the enlarged rear part of the shoe-chamber 2, andthe blast is thus caused to traverse the full length of the screens orriddles of said shoe 3. One advantage of this diversion or deflection ofthe blast resides in the fact that it is caused to traverse the screensor riddles to more thoroughly carry off the chaff and refuse from theshoe, anda further advantage due to the lies in the path of the blastfrom the fan 4.

employment of the inclined bafile is that the light grain carried by theblast impinges against the baffle and is deflected thereby upon thescreens or riddles, thus causing the shoe to save and deliver to asuitable receptacle the grain which is deposited thereon. By arrangingthe baffle in the inclined posi-' tion to overhang the cleaning-shoe andso that the lower edge of the baflie lies above the rear end of the shoea narrow space is provided between the lower edge of the suspendedbafiie and the shoe, whereby the bafiie diverts the blast from the fan,and the blast is concentrated at and over the rear end of the shoe forthe purpose of efiectually carrying the chaff from the shoe, while thegrain is permitted to lodge and fall on the riddles of the shoe. In thepreferred embodiment of my invention I adjustably support this inclinedbaffle in place within the shoe-chamber for the purpose of changing itsangle with relation to the shoe and enabling the attachment to be usedto good advantage when cleaning grains of diiferent kinds. In cleaninggrains of one kind it is desirable to use the full strength of the blastfrom the fan 4 and provide for the ready and free escape of the refuseand chaff therethrough; but in cleaning other kinds of grain the bafflemay be lowered into close relation to the shoe to in a measure obstructthe passage of the blast of air from the machine. As indicating onemeans for adjustably suspending the baffle within the shoe-chamber, Ihave shown the upper front end of the inclined baffle hinged, as at 7,to a part of the threshing-machine, while the lower rear end of thebaflie is sustained by an adjustable connection 8 with saidthreshing-machine. This adj ustable connection 8 is represented as abail 9, which is pivoted at 10 to the rear end of the baffle, and thisbail has a central loop 11, which may be adjusted to engage with eitherof the series of screw-hooks 12, which are fastened to a part of thethreshing-machine at variable distances from the hinged connection 7. Itis evident that the bail 9 may be adjusted to engage with either ofthehooks 12 of the series of spaced hooks shown by Fig. 1 to support thebaflle in Variable inclined positions and at different distances fromthe cleaning-shoe; but I would have it understood that I do not strictlylimit myself to the precise means disclosed for adj ustably suspendingthe bafiie within the shoe-chamber of the threshing-machine. I alsocontemplate making the bafile in adjustable sections which are slidablyconnected together to enable one section to be moved upon the othersection and shorten the baflie, whereby to provide a space or openingabove or below the battle 6, through which opening a part of the aircurrent or blast may pass.

In Figs. 2, 3, and 4 of the drawings the inclined baiiie is representedas constructed in two sections 12 13, and on the sections 12 and 13 Iprovide two series of alined guide eyes or loops 14, which are adaptedto receive the pair of guide-rods 15. The guide-rods 15 are slidablyfitted in the eyes or loops 14: to sustain the two sections 12 13 intheir adjusted positions, and said guide-rods 15 are fitted with hooks 7at one end, which are attached to the threshing-machine, giving thebafiie 6 a hinge movement, and said rods are also provided with loops 10at their other ends, to which is attached the bail 9, which may beengaged with either of the series of suspension-hooks 12. The twosections 12 13 of the bafiie may be adjusted upon each other to shortenor lengthen the baffle, and when the baflie is shortened an opening orspace will be provided above or below the battle 6, and thus a part ofthe blast is permitted to pass through said opening above the bafiiewhile another part of the blast will be deflected toward the shoe 3.

By reference to Fig. 1 of the drawings it will be noted that the upperend of the baflie is suspended by the hook 7and a link to provide aspace above the baffle for a part of the air-blast to pass over theforward upper edge of the bafiie. In practical use of my deflector theupper end of the baflie should be arranged below the straw-carrier inrear of the plane of the front end of the cleaning-shoe and in suchrelation to the working parts or elements of the threshing-machine as topermit the straw to pass on the straw-carrier over the baffie, while thegrain falls upon the forward end of the cleaning-shoe.

The described construction and arrangement of the sectional baflleprovide for the attainment of two currents of the air-blast deliveredfrom the fan, and thus the blast may be controlled to carry ofi therefuse or the chaff from the shoe and the threshing-machine proper tothe best advantage to the stacker mechanism 5.

From the foregoing description, taken in connection with the drawings,it will be seen that I have provided an improved attachment fordiverting the blast from the fan upon a primary cleaning-shoe with aView to utilizing the full energy of the blast in carrying ofi therefuse and chaff from the shoe and to effecting economy in the loss ofgrain which ordinarily results when the blast is permitted to escapewithout obstruction. The improved attachment may be readily applied toany ordinary threshing-machine, and it is adapted to be easily andquickly adjusted according to the demands of the service.

It is thought that the operation and advantages of the invention will befully understood from the-foregoing description taken in connection withthe drawings.

The baffle may be made of wood, tin, canvas, or other suitable materialand may be made in one or two sections fastened permanently or hinged tothe threshing-machine.

I am aware that changes in the form and proportion of parts and in thedetails of construction may be made by a skilled mechanic IIO withoutdeparting from the spirit or sacrificing the advantages of my invention,and I therefore reserve the right to make such modifications as clearlyfall within the scope of the invention.

Having thus described the invention, what I claim is I 1. In athreshing-machine, the combination with a shoe-chamber, a shoe, and ablastfan, of a sectional deflector having its members coupled slidablytogether in overlapping relation and arranged over the shoe to lie inthe path of the blast after it passes through said shoe, means forpivotally supporting the upper end of the deflector in the shoe-chamher,and means for adj ustably suspending the lower end of the deflector atvariable distances from the rear part of 'the shoe, said deflector beingmaintained at all times in an inclined position over the shoe and withits lower edge above said shoe to leave an in-.

tervening space for the passage of the blast and the chaff, whereby thedeflector concentrates the blast at the rear end of the shoe,substantially as described.

2. In a threshing-machine,the combination with a shoe-chamber, a shoe,and a fan, of a deflector arranged within said chamber and. incliningdownwardly toward the rear end of the shoe, means for pivotallysupporting the front end of the deflector in the shoe-chamber, a bailattached to the inclined deflector near its lower end, and suspensiondevices engaging with said bail for suspending the lower edge of thedeflector in variable relation to the shoe, substantially as described.

3. In a threshing-machine, the combination with a shoe-chamber, a shoe,and ablast-fan arranged to force a blast through the sieves of the shoe,of a sectional extensible deflector suspended at two points in theshoechamber in the path of the blast from the fan and inclineddownwardly toward the tail of the shoe, said deflector having itsmembers connected slidably together and adjustable relatively to eachother between the points of suspension, whereby the length of thedeflector may be changed and the width of the space between the shoe anddeflector varied, substantially as described.

4. In a threshing-machine,the combination with a shoe-chamber, a shoe,and a blast-fan, of a sectional extensible deflector arranged in aninclined position over the shoe, a fixed suspension device for one endof the shoe, and a shiftable suspension device for the other end of theshoe, said deflector being -extensible between the fixed and shiftablesuspension devices,for the purpose described, substantially as setforth.

5. In a threshing-machine, an extensible sectional deflector comprisingsections arranged to overlap each other, guide-rods attached to onedeflector-section, guides carried by the other deflector=section andslidably receiving the guide-rods, and suspension devices connected tothe respective de-' fiector-sections, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

EZRA CAMPBELL.

Witnesses:

O. W. HANGER, LEE HANGER.

